$(function () {
    aa();
})

function aa() {
    let username = sessionStorage.getItem("username");
    console.log(username, "+++");
    $("#loginUsername").html(username);
}

function openClose(obj) {
    $(obj).parent().siblings().children("div:nth-child(2)").hide();
    // $(".aa").css({"background-color": "lightblue", "display": "none"});
    $(obj).siblings().show();
}

function tiaozhuan(url) {
    $("#right").load("/html/back/" + url);
}